Here is a snip from the Daily Mail. (supposedly) citing NRA.....
https://www.dailymail.co.uk/news/article-8512349/Police-raid-house-gun-toting-St-Louis-lawyer-couple.html
According to the NRA, state law does not prohibit the open carrying of firearms, but does prohibit exhibiting 'any weapon readily capable of lethal use' in an angry or threatening manner in the presence of one or more persons.
Exhibiting a weapon in this way would likely be a Class D felony punishable by up to four years in prison and a fine not to exceed $5,000.
A lot of this is up for debate, but I have seen Twitter feeds that show the crowd that day had firearms too.
Keep in mind this angry crowd had already broken down a metal gate to trespass on their property. In light of events perpetrated by people yelling the same slogans, it is credible that these people were in fear for their lives and property, and only defending it against armed trespassers.
Obviously, the Second Amendment has been violated. They were on their private property, chasing trespassers away, in fear for their lives. If you cannot bear arms on your own property? Seems to me that was covered in
Heller.
Fifth Amendment
...nor be deprived of life, liberty, or property, without due process of law...
.
Fourteenth Amendment Section 1:
...No state shall make or enforce any law which shall abridge the privileges or immunities of citizens of the United States; nor shall any state deprive any person of life, liberty, or property, without due process of law; nor deny to any person within its jurisdiction the equal protection of the laws
For a bonus, considering events of late:
Section 3.
No person shall be a Senator or Representative in Congress, or elector of President and Vice President, or hold any office, civil or military, under the United States, or under any state, who, having previously taken an oath, as a member of Congress, or as an officer of the United States, or as a member of any state legislature, or as an executive or judicial officer of any state, to support the Constitution of the United States, shall have engaged in insurrection or rebellion against the same, or given aid or comfort to the enemies thereof. But Congress may by a vote of two-thirds of each House, remove such disability.
I n=know that was aimed at (former) Confederates, but it's time to use it on the Communists.